Results 41 to 50 of about 278,077 (263)

Overstable analytic solutions for non-linear systems of difference equations with small step size containing an additional parameter [PDF]

Journal of Difference Equations and Applications, 2005
We consider non linear systems of difference equations with smallstep size containing an additional parameter "a". Under the assumption that the Jacobian of our system is not invertible at some point x=x_0 and some transversality condition, we show the existence of a function "a" having a Gevrey-1 asymptotic expansion and for which the system admits an
El Rabih, Abir, Schäfke, Reinhard
openaire   +2 more sources

Statistical field theories deformed within different calculi

, 2010
Within framework of basic-deformed and finite-difference calculi, as well as deformation procedures proposed by Tsallis, Abe, and Kaniadakis to be generalized by Naudts, we develop field-theoretical schemes of statistically distributed fields.
Borysov, S. S., Olemskoi, A. I., Shuda, I. A.   +2 more
core   +1 more source

Causal inference for the covariance between breeding values under identity disequilibrium

Genetics Selection Evolution, 2022
Background The covariance matrix of breeding values is at the heart of prediction methods. Prediction of breeding values can be formulated using either an “observed” or a theoretical covariance matrix, and a major argument for choosing one or the other ...
Rodolfo J. C. Cantet, Belcy K. Angarita-Barajas, Natalia S. Forneris, Sebastián Munilla   +3 more
doaj   +1 more source

Nonlinear dynamics of the additive-pulse modelocked laser

Discrete Dynamics in Nature and Society, 1998
We have modeled the additive-pulse modelocked (APM) laser with a set of four nonlinear difference equations, that describe the transit of optical pulses through the main cavity and through an external cavity containing a single-mode optical fiber ...
E. J. Mozdy, C. R. Pollock
doaj   +1 more source

Some representations of the general solution to a difference equation of additive type [PDF]

Advances in Difference Equations, 2019
AbstractThe general solution to the difference equation$$x_{n+1}=\frac {ax_{n}x_{n-1}x_{n-2}+bx_{n-1}x_{n-2}+cx_{n-2}+d}{x_{n}x_{n-1}x_{n-2}},\quad n\in\mathbb{N}_{0}, $$xn+1=axnxn−1xn−2+bxn−1xn−2+cxn−2+dxnxn−1xn−2,n∈N0,where$a, b, c\in\mathbb{C}$a,b,c∈C,$d\in\mathbb{C}\setminus\{0\}$d∈C∖{0}, is presented by using the coefficients, the initial values ...
openaire   +2 more sources

Theoretical and experimental analysis of phase noise in semiconductor lasers biased below threshold

JPhys Photonics
We report a theoretical and experimental study of phase noise in semiconductor lasers when the bias current is below the threshold value. The theoretical study is performed by using two types of rate equations, with additive and multiplicative noise ...
Iker Pascual de Zulueta, Angel Valle
doaj   +1 more source

Vehicle Velocity Estimation Fusion with Kinematic Integral and Empirical Correction on Multi-Timescales

Energies, 2019
Accurate and reliable vehicle velocity estimation is greatly motivated by the increasing demands of high-precision motion control for autonomous vehicles and the decreasing cost of the required multi-axis IMU sensors.
Jiangyi Lv, Hongwen He, Wei Liu, Yong Chen, Fengchun Sun   +4 more
doaj   +1 more source

Optimization approach for the simultaneous reconstruction of the dielectric permittivity and magnetic permeability functions from limited observations

, 2014
We consider the inverse problem of the simultaneous reconstruction of the dielectric permittivity and magnetic permeability functions of the Maxwell's system in 3D with limited boundary observations of the electric field.
Beilina, Larisa, Cristofol, Michel, Niinimäki, Kati   +2 more
core   +2 more sources

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash, Anis Rabbani Nourani, A. K. M. Fazlur Rahman, Dima Ezmigna, Tarig Ali‐Dinar   +4 more
wiley   +1 more source

The Fate (Outcome) of Clinically Apparent Single Lesion and Oligofocal Nephroblastomatosis Treated According to SIOP/GPOH Protocols for Wilms Tumor

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter, Jens‐Peter Schenk, Jenny Wegert, Manfred Gessler, Leo Kager, Stefan Wagenpfeil, Marina Müller, Jean‐Michel Wolff, Joerg Fuchs, Steven W. Warmann, Clemens‐Magnus Meier, Jochen Hubertus, Christian Rübe, Christian Vokuhl, Patrick Melchior, Lena Tschirner, Norbert Graf, Rhoikos Furtwängler   +17 more
wiley   +1 more source